Fog Delays Events at Sochi Olympics

A gondola goes through the fog prior to the men's snowboard cross competition at the Rosa Khutor Extreme Park, at the 2014 Winter Olympics, Feb. 17, 2014, in Krasnaya Polyana, Russia

Andy Won/AP Photo

Athletes train as fog enshrouds the course of the men's biathlon 15k mass-start, at the 2014 Winter Olympics, Feb. 17, 2014, in Krasnaya Polyana, Russia. The race has been delayed due to fog, one day after the event was called off for the same reason.

Lee Jin-man/AP Photo

A gondola goes through the fog prior to the men's snowboard cross competition at the Rosa Khutor Extreme Park, at the 2014 Winter Olympics, Feb. 17, 2014, in Krasnaya Polyana, Russia

Raindrops cling to the window of a gondola prior to a men's snowboard cross competition at the Rosa Khutor Extreme Park, at the 2014 Winter Olympics, Feb. 17, 2014, in Krasnaya Polyana, Russia.

Luca Bruno/AP Photo

The sun tries to break through the heavy fog as skiers take a chair lift up the mountain near the alpine skiing training slopes at the Sochi 2014 Winter Olympics, Feb. 17, 2014, in Krasnaya Polyana, Russia.

Christophe Ena/AP Photo

Athletes train in the fog during a freestyle skiing training session in the halfpipe of the Rosa Khutor Extreme Park, at the 2014 Winter Olympics, Feb. 17, 2014, in Krasnaya Polyana, Russia.

Sergei Grits/AP Photo

Athletes ski through the fog as the men's biathlon 15K mass start race has been postponed due to the lack of visibility at the 2014 Winter Olympics, Feb. 16, 2014, in Krasnaya Polyana, Russia.